51-21-8
5-氟脲嘧啶
+
22121-71-7
2-Nitrophenetol-4-sulfonylchlorid
→
128887-34-3
1-(4-ethoxy-3-nitrophenyl)sulfonyl-5-fluoropyrimidine-2,4-dione
1132-17-8
对乙氧基苯磺酰氯